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Chapter 3: Proportional Relationships; Model Quiz

3.1 Representing Proportional Relationships

• Question 1

Find the constant of proportionality for the table of values. • Question 2

Phil is riding his bike. He rides 25 miles in 2 hours, 37.5 miles in 3 hours, and 50 miles in 4 hours. Find the constant of proportionality and write an equation to describe the situation.

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3.2 Rate of Change and Slope

Find the slope of each line.

• Question 3 • Question 4 3.3 Interpreting the Unit Rate as Slope

• Question 5

The distance Train A travels is represented by d = 70t, where d is the distance in kilometers and t is the time in hours. The distance Train B travels at various times is shown in the table. What is the unit rate of each train? Which train is going faster? Essential Question

• Question 6

What is the relationship among proportional relationships, lines, rates of change, and slope?

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